:root {
            --primary-blue: #4169E1;
            --success-green: #10B981;
            --dark-bg: #2C3E50;
        }
        
        body {
            background: #F1F5F9;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            padding-bottom: 2rem;
        }
        
        /* Progress Steps */
        .progress-box {
            background: white;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            padding: 0;
            margin-bottom: 1.5rem;
            overflow: hidden;
        }
        
        .step-item {
            display: flex;
            align-items: center;
            padding: 1rem 1.25rem;
            border-bottom: 1px solid #E2E8F0;
            cursor: pointer;
            transition: all 0.2s;
            background: white;
        }
        
        .step-item:last-child {
            border-bottom: none;
        }
        
        .step-item:hover {
            background: #F8FAFC;
        }
        
        .step-item.active {
            background: #F0F4FF;
        }
        
        .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            font-weight: 600;
            font-size: 0.875rem;
            flex-shrink: 0;
        }
        
        .step-number.completed {
            background: var(--primary-blue);
            color: white;
        }
        
        .step-number.active {
            background: var(--primary-blue);
            color: white;
        }
        
        .step-number.pending {
            background: #E2E8F0;
            color: #94A3B8;
        }
        
        .step-content {
            flex: 1;
        }
        
        .step-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: #1E293B;
            margin-bottom: 0.125rem;
        }
        
        .step-subtitle {
            font-size: 0.75rem;
            color: #64748B;
        }
        
        /* Parameters Box */
        .parameters-box {
            background: white;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            padding: 0;
            margin-bottom: 1.5rem;
            overflow: hidden;
        }
        
        .parameters-header {
            padding: 1rem 1.25rem;
            border-bottom: 1px solid #E2E8F0;
            background: white;
        }
        
        .parameters-title {
            font-size: 1rem;
            font-weight: 700;
            color: #1E293B;
            margin: 0;
            display: flex;
            align-items: center;
        }
        
        .parameters-title i {
            margin-right: 0.5rem;
            color: var(--primary-blue);
        }
        
        .parameters-body {
            padding: 1.25rem;
        }
        
        .param-group {
            margin-bottom: 1.25rem;
        }
        
        .param-group:last-child {
            margin-bottom: 0;
        }
        
        .param-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: #1E293B;
            margin-bottom: 0.75rem;
            display: block;
        }
        
        .dimension-control {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }
        
        .dimension-control:last-child {
            margin-bottom: 0;
        }
        
        .dimension-label {
            font-size: 1rem;
            color: #06080a;
            width: 50%;
        }
        
        .counter-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex: 1;
        }
        
        .counter-btn {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            border: 1px solid #E2E8F0;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            font-size: 1rem;
            color: #64748B;
        }
        
        .counter-btn:hover {
            border-color: var(--primary-blue);
            color: var(--primary-blue);
            background: #F0F4FF;
        }
        
        .counter-value {
            font-size: 1rem;
            font-weight: 600;
            min-width: 50px;
            text-align: center;
            color: #1E293B;
        }
        
        /* Room Preview */
        .room-preview-card {
            background: white;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            padding: 1.20rem;
        }
        
        .room-preview {
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }
        
        .dimension-badge.bottom{
            top: 15%;
            left: 83%;
            transform: translateX(-50%);
        }
        
        .dimension-badge.top {
            top: 50%;
            right: 0%;
        }
        
        .dimension-badge.right  {
            top: 15%;
            right: 76%;
        }
        
        .room-image {
            width: 95%;
            max-height: 90%;
            border-radius: 6px;
            display: block;
            margin: 0 auto;
        }
        
        .dimension-badge {
            position: absolute;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 0.35rem 0.65rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.75rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            color: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        /* Result Cards */
        .result-card {
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            padding: 1.5rem;
            color: white;
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        
        .result-card.blue {
            background: linear-gradient(135deg, #3B5BDB 0%, #364FC7 100%);
        }
        
        .result-card.green {
            background: linear-gradient(135deg, #12B886 0%, #0CA678 100%);
        }
        
        .result-label {
            font-size: 0.875rem;
            opacity: 0.9;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        
        .result-value {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        
        .result-unit {
            font-size: 1.25rem;
            font-weight: 500;
            opacity: 0.9;
        }
        
        .result-note {
            font-size: 0.75rem;
            opacity: 0.9;
            margin-top: 0.75rem;
        }
        
        /* Tech Table */
        .tech-table-card {
            background: white;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }
        
        .tech-table-header {
            padding: 1rem 1.25rem;
            border-bottom: 1px solid #E2E8F0;
        }
        
        .tech-table-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: #1E293B;
            margin: 0;
        }
        
        .tech-table-subtitle {
            font-size: 0.75rem;
            color: #64748B;
            margin: 0;
        }
        
        .tech-table {
            width: 100%;
        }
        
        .tech-table th {
            background: #F8FAFC;
            padding: 0.75rem 1.25rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: #64748B;
            text-transform: uppercase;
            border-bottom: 1px solid #E2E8F0;
        }
        
        .tech-table td {
            padding: 1rem 1.25rem;
            font-size: 0.875rem;
            color: #1E293B;
        }
        
        /* Light Cards */
        .lights-section {
            background: white;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            padding: 1.25rem;
            margin-bottom: 1.5rem;
        }
        
        .lights-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: #64748B;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }
        
        .light-card {
            text-align: center;
            padding: 1.25rem;
            border: 1px solid #E2E8F0;
            border-radius: 8px;
            transition: all 0.2s;
            cursor: pointer;
            height: 100%;
        }
        
        .light-card:hover {
            border-color: var(--primary-blue);
            background: #F0F4FF;
        }
        
        .light-card.active {
            border-color: var(--primary-blue);
            background: #F0F4FF;
            box-shadow: 0 0 0 2px rgba(65, 105, 225, 0.2);
        }
        
        .light-icon {
            width: 60px;
            height: 60px;
            object-fit: contain;
            margin-bottom: 0.75rem;
            border-radius: 6px;
        }
        
        .light-name {
            font-weight: 600;
            font-size: 0.875rem;
            color: #1E293B;
            margin-bottom: 0.25rem;
            height: 40px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        
        .light-desc {
            font-size: 0.75rem;
            color: #64748B;
        }
        
        /* Info Alert - Boshlang'ichda yashirin */
        .info-alert {
            background: #EFF6FF;
            border: 1px solid #DBEAFE;
            border-radius: 8px;
            padding: 1rem;
            font-size: 1rem;
            color: #1E40AF;
            height: 18vh;
            display: none;
        }
        
        .info-alert.show {
            display: block;
        }
        
        .info-alert i {
            color: #3B82F6;
            margin-right: 0.5rem;
            font-size: 1.5rem;
        }
        
        /* Buttons */
        .btn-custom {
            padding: 0.625rem 1.25rem;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 8px;
        }
        
        /* Select Inputs */
        .form-select {
            font-size: 0.875rem;
            border-color: #E2E8F0;
            border-radius: 6px;
            padding: 0.5rem 0.75rem;
        }
        
        .form-select:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 0.2rem rgba(65, 105, 225, 0.1);
        }
        
        /* Lamps Table */
        .lamps-table {
            width: 100%;
            border-collapse: collapse;
        }
        
        .lamps-table th {
            background: #F8FAFC;
            padding: 0.75rem 1rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: #64748B;
            text-transform: uppercase;
            border-bottom: 1px solid #E2E8F0;
        }
        
        .lamps-table td {
            padding: 1rem;
            font-size: 0.875rem;
            color: #1E293B;
            border-bottom: 1px solid #E2E8F0;
        }
        
        .lamps-table tr:last-child td {
            border-bottom: none;
        }
        
        .lamp-image {
            width: 60px;
            height: 60px;
            object-fit: contain;
            border-radius: 4px;
        }
        
        /* AI Maslahatchi va Tafsiya bo'limlari - Boshlang'ichda yashirin */
        .ai-section {
            display: none;
        }
        
        .ai-section.show {
            display: block;
        }
        
        /* Chap karta - Mahsulot */
        .product-card {
            background: white;
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
            height: 100%;
        }
        .product-header {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            margin-bottom: 28px;
        }
        .product-image {
            width: 110px;
            height: 110px;
            object-fit: contain;
            border-radius: 8px;
            flex-shrink: 0;
            background: #f8fafc;
        }
        .badge-recommend {
            background: #e8f4fd;
            color: #2962d4;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .badge-icon {
            font-size: 18px;
        }
        .product-title {
            font-size: 24px;
            font-weight: 700;
            color: #1a202c;
            margin-bottom: 8px;
        }
        .product-desc {
            color: #718096;
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 24px;
        }
        .specs-row {
            display: flex;
            gap: 40px;
            align-items: flex-start;
        }
        .spec-item {
            flex: 0 0 auto;
        }
        .spec-label {
            font-size: 12px;
            color: #a0aec0;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .spec-value {
            font-size: 40px;
            font-weight: 700;
            color: #2962d4;
            line-height: 1;
        }
        .spec-divider {
            width: 1px;
            height: 60px;
            background: #e2e8f0;
            margin: 0;
        }
        .details-toggle {
            background: #f7fafc;
            border: none;
            width: 100%;
            padding: 16px 20px;
            border-radius: 10px;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            color: #2d3748;
            font-size: 14px;
            margin-top: 28px;
            transition: background 0.2s;
        }
        .details-toggle:hover {
            background: #edf2f7;
        }
        
        /* O'ng karta - AI Maslahatchi */
        .ai-card {
            background: #f7f9ff;
            border-radius: 16px;
            padding: 28px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.08);
            height: 100%;
        }
        .ai-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .ai-icon-wrapper {
            width: 48px;
            height: 48px;
            background: #e8eeff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .ai-icon {
            font-size: 24px;
        }
        .ai-title {
            font-weight: 600;
            color: #2d3748;
            font-size: 16px;
        }
        .ai-message-box {
            background: white;
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }
        .ai-content {
            color: #4a5568;
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .ai-content strong {
            color: #2962d4;
            font-weight: 600;
        }
        /* Typing animatsiyasi uchun */
        .typing-dots {
            display: inline-flex;
            align-items: center;
        }

        .typing-dots span {
            animation: typing 1.4s infinite;
            opacity: 0;
            margin: 0 2px;
        }

        .typing-dots span:nth-child(1) {
            animation-delay: 0s;
        }

        .typing-dots span:nth-child(2) {
            animation-delay: 0.2s;
        }

        .typing-dots span:nth-child(3) {
            animation-delay: 0.4s;
        }

        @keyframes typing {
            0% { opacity: 0; }
            50% { opacity: 1; }
            100% { opacity: 0; }
        }

        /* AI bo'limi uchun qo'shimcha stillar */
        .ai-loading {
            color: #666;
            font-style: italic;
        }
        .tags-container {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            background: #f0f0f5;
            color: #6b7280;
            padding: 6px 14px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
        }
        .btn-variants {
            background: white;
            border: 1px solid #e2e8f0;
            width: 100%;
            padding: 14px 20px;
            border-radius: 10px;
            cursor: pointer;
            font-weight: 500;
            color: #2d3748;
            font-size: 14px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.2s;
        }
        .btn-variants:hover {
            border-color: #cbd5e0;
            background: #fafafa;
        }
        
        /* Kategoriya bo'yicha lampochkalar jadvali */
        .category-lamps-section {
            margin-top: 20px;
            display: none;
        }
        
        .category-lamps-section.show {
            display: block;
        }
        
        .category-lamps-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 15px;
        }
        
        .category-lamps-table th {
            background: #f8fafc;
            padding: 12px 15px;
            font-size: 0.75rem;
            font-weight: 600;
            color: #64748B;
            text-transform: uppercase;
            border-bottom: 2px solid #e2e8f0;
        }
        
        .category-lamps-table td {
            padding: 15px;
            font-size: 0.875rem;
            color: #1E293B;
            border-bottom: 1px solid #e2e8f0;
        }
        
        .category-lamps-table tr:hover {
            background: #f8fafc;
        }
        
        .category-image {
            width: 50px;
            height: 50px;
            object-fit: contain;
            border-radius: 4px;
        }
        
        @media (max-width: 768px) {
            .result-value {
                font-size: 2rem;
            }
            
            .dimension-badge {
                font-size: 0.625rem;
                padding: 0.25rem 0.5rem;
            }
            
            .room-preview-card {
                margin-top: 1.5rem;
            }
            
            .specs-row {
                flex-direction: column;
                gap: 20px;
            }
            
            .spec-divider {
                display: none;
            }
            
            .product-header {
                flex-direction: column;
                gap: 15px;
            }
            
            .product-image {
                width: 100px;
                height: 100px;
            }
        }